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    Home > Coatings News > Paints and Coatings Market > What are the technical performance of the adhesive?

    What are the technical performance of the adhesive?

    • Last Update: 2021-04-14
    • Source: Internet
    • Author: User
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    Although the adhesive is only a supporting material in construction and decoration, it does not mean that it is not important.
    In actual decoration, a large number of materials (such as wallpaper, various floors, ceramics, stone decoration materials, etc.
    ) are laid by pasting methods.
    Therefore, the appropriate choice of adhesive directly affects the firmness of the laying and also affects the decoration.
    The decorative effect of the surface.
    When choosing an adhesive, you should first understand its basic technical properties.
    These properties are the basic conditions to ensure the degree of com" href="">adhesion .
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    com .


    1.


    Craftsmanship 

    It refers to the performance of the adhesive related to the bonding operation, including the preparation of the adhesive, gluing, drying, curing conditions, etc.


    , and it is also an evaluation of the difficulty of the bonding operation.



    It is a performance index to ensure the firmness of the bond.
    Insufficient bonding strength will cause the adherend to fall off.
    If it is wall decoration, the adherend will fall, which will not only affect the quality of the decoration, but sometimes cause injury.


    3.


    Stability 

    Refers to the degree of change in the strength of the bonded specimen after being immersed in a specified medium at a certain temperature for a period of time.
    Such as water resistance, oil resistance and so on.
    It is usually expressed by measured strength or by strength retention rate.
    Adhesives that need to be bonded to the floor, exterior walls, or facing materials in bathrooms, toilets, etc.
    , must have good stability.


    4.


    Durability (or aging resistance) 

    As the time of use increases, the performance of the adhesive layer will gradually age until it loses its bonding strength.
    This performance is called durability.
    Because the most used adhesives are organic polymer materials based on synthetic resins or synthetic rubbers, which are prone to aging and deterioration during use, causing the bonding layer to lose its effectiveness and fall off.
    5.
    Temperature resistance Temperature resistance refers to the change in the performance of the adhesive within the specified temperature range.
    Including heat resistance (under high temperature environmental conditions), cold resistance (under low temperature environmental conditions) and resistance to high and low temperature changes.
    These temperature changes will also change the composition of the adhesive, thereby reducing the bonding strength until the adhesive layer falls off.


    Six, weather resistance 

    For the bonding parts exposed to the outdoors, their ability to withstand weather, such as rain, sunlight, wind and snow, and moisture, is called weather resistance.


    The weather resistance also reflects the long-term effect of natural conditions, the adhesive layer's performance resistance to aging.



    Most synthetic resin adhesives and some natural resin adhesives will undergo different changes such as dissolution, swelling, aging or corrosion under the action of chemical media, resulting in a decrease in bonding strength.


    8.


    Other properties 

    In addition to the several properties described above (that is, the influence of various environmental conditions such as temperature, humidity, sunlight, chemical media, etc.
    on the bonding strength of the adhesive layer of the adhesive, which comprehensively reflects the use effect of the adhesive layer) in the selection In addition to the adhesives, other properties of the adhesive should be considered, such as: whether there is a pungent odor, whether it is toxic, what is the color of the adhesive, what is the storage stability, how long the storage period is, and the price.


    The adhesive used indoors should have no pungent odor and no toxicity.


    If an odorous adhesive must be used, it should be used after the adhesive layer is completely dry.



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